Gun Overview

Alternator Speed (Hertz) Screen

The Alternator Speed (Hertz) Screen is the third screen in the Diagnostic Mode. See Fig. 8, and Table 1 on page 11. To enter this screen, press the LO SET button while in the Current (microAmperes) Screen.

This screen displays the alternator speed as a 3 digit number (AS), rounded to the nearest 10 Hz. The display is a readout and cannot be changed. If the alternator speed is greater than 999 Hz, the display will show 999.

The Hz indicator lights green to show that you are viewing the Alternator Speed (Hertz) Screen.

Press the LO SET button to advance to the

Low Voltage Lock Screen, page 14. Press and hold for approximately 5 seconds to return to Operating Mode.

Figure 8 Alternator Speed (Hertz) Screen

Low Voltage Lock Screen

The Low Voltage Lock Screen is the fourth screen in the Diagnostic Mode. See Fig. 9, and Table 1 on page 11. To enter this screen, press the LO SET button while in the Alternator Speed (Hertz) Screen.

This screen displays the status of the Low Voltage Lock. If the setting is locked, the lock image (LK) appears to the left of the Lo display (LD). If the setting is unlocked, the lock image does not appear.

To change the lock status, press and hold the LO SET button until the lock image appears or disappears. If the lock is set, the image will also appear on the Low Voltage Setting Screen when in low voltage mode (see Fig. 4).

NOTE: Diagnostic Mode cannot be exited from this screen, because pressing and holding the LO SET button is used to turn the lock on or off. To exit, press LO SET momentarily to return to the Voltage (kiloVolts) Screen, then exit Diagnostic Mode from there.

Figure 9 Low Voltage Lock Screen

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3A2495C

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Graco 3A2495C important safety instructions Alternator Speed Hertz Screen